Normally, all should work out of the box, except the Broadcom_BCM4312 which needs some tweaking. The Network Controller (Atheros) is buggy in the 2009.8 iso packed with a 2.6.30 kernel, so at first nothing is detected at all (in dmesg as of in ifconfig -a). If you're in that case, see : https://bbs.archlinux.org/viewtopic.php?pid=728569 . The bug has been corrected in the kernel, so this thread will become irrelevant with a new iso.